The UPS has been designed to protect critical information and telecommunications systems, networks, services and processes whose operation could be disrupted by poor power quality and/or breaks in their mains power supply.

The sizes available include 10-12-15-20-30-40-60-80-100-120-160-200 kVA all with a three-phase input and output.
The MULTI SENTRY UPS is one of the most efficient UPS available with a minimal impact on its environment and power sources.

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Characteristics

MULTI SENTRY UPS are easy to install, especially on sites where there is limited power capacity available, a standby generator and potentially harmonic compatibility issues:

low input current distortion - less than 3%

high input power factor 0.99

power walk-in function to achieve progressive rectifier start-up

delayed start-up on mains power supply return

MULTI SENTRY also performs the role of a high specification filter, protecting its power supply sources (mains or generator) from any harmonics and reactive power generated by the loads it is powering.

The MULTI SENTRY Battery Care System optimises battery performance, to help extend their working life and ensure that the UPS can deliver its full-rated back-up time when called upon in an emergency.

Battery recharge: MULTI SENTRY is designed to work with VRLA AGM and GEL lead-acid batteries including open-vented types, in addition to Ni-Cads. Specific management features include:

One-level recharge to meet the requirements of the most common VRLA AGM batteries

Two voltage level recharge meeting the IU characteristic

Restricted charging to reduce electrolyte consumption and extend the life of VRLA batteries

Temperature compensation: to avoid excessive voltage being applied to the batteries in a high ambient

Battery test: to detect performance degradation and predict battery failure. Deep discharge protection: to prevent the batteries being discharged below a level from which they cannot be recovered (especially when discharged over long periods with very low loads).

Low AC ripple current: from a high-frequency battery charger, to ensure the batteries are not subjected to this damaging element commonly experienced with some other UPS and power supply designs.

Wide input voltage range: from a rectifier that can work down to less than 40% of its nominal supply rating (at half load), removing the need to discharge the batteries.

The MULTI SENTRY design provides exceptional performance and efficiency levels, within a very compact footprint and overall case design:

Lowest footprint in its category - 0.26m² for the 20kVA MULTI SENTRY with internal batteries.

High efficiency up to 96% - saving up to 35% in dissipated energy in one year compared to a more traditional UPS (91%) resulting in a faster payback period of four years.

High output power factor which at 0,9pF (1pF for models 160-200 kVA) provides up to 15% ( 20% for models 160-200 kVA) more active power compared to a more traditionally sized UPS - providing greater system expansion margin for further load increases.